Franklih copeland



UNITED STATES PATENT OFFICE.

FRANKLIN COPELAND, OF BOSTON, MASSACHUSETTS.

EM ERY-CLOTH.

SPECIFICATION forming part of Letters Patent No. 224,078, dated February3, 1880.

- Application filed October '28, 187i).

To all whom it may concern Be it known that 1, FRANKLIN COPELAND, ofBoston, Massachusetts, have invented new and useful Improvements inEmery-Cloth, of which the following is a clear, full, and exactdescription. l

All emery-cloths now known to the trade are so made that the emery andthe binding medium both lie substantially on the surface of the cloth,which leads to breaking or cracking elf of the emery and mucilaginousbindin g material from the textile fabric when the emery-cloth isclosely folded or roughly handled. D

The object of my invention is to overcome this great difliculty inmerchantable emerycloth; and my invention consists in a new method ofmaking emerycloth, wherein a cold solution of a soluble silicate isspread over a textile fabric as a mucila-ge, the corundum or emery issprinkled over the mucilaginous surface thus formed, and the sheet thusprepared is passed under pressure between two heated rollers, wherebythe textile fabric, the emery, and the silicate are compressed intosubstantially a homogeneous mass, and the emery is set in the silicate,substantially as hereinafter described.

In order that those skilled in the art may make and use my invention, Iwill proceed to describe the manner in which 'I have carried it out.

In practicing myv invention I take a textile fabric so woven as to betough and pliable, and

a quantity sufficient to size the faces of the particles of emery, andalso enter the interstices of the cloth; then the emery or emery andcorundum are sprinkled over the surface of the adhesive silicate, andthe sheet is immediately passed between heated rollers under pressure.The emery-cloth leaves the rollers in substantially a homogeneouscondition, and it will be found that when the cloth is folded or roughlyhandled the abrading-surface will not flake off. The interstices of thecloth receive the binding material, and it spreads into the fibers,holding the particles of emery in the strongest manner, and yet in nowise impairing the pliability of the emery-cloth.

Having thus described my invention, what I claim as new, and desire tosecure by Let ters Patent, is

The improved method of making emerycloth herein described, andconsisting in spreading a cold solution of the silicate of soda orpotash on the surface of a textile fabric,then in sprinkling emery overthe exposed surface of the silicate, and, lastly, in passing the sheetthus prepared between heated rollers under heavy pressure, substantiallyas and I for the purpose set forth.

FRANKLIN COPELAND.

I'Vitnesses J OHNIJ. OoUDRoN, WM. F. MORSELL.

